Dual port support | Seagate ST9500432SS, ST9500430SS, ST9500431SS

12.2Dual port support

Constellation SAS drives have two independent ports. These ports may be connected in the same or different SCSI domains. Each drive port has a unique SAS address.

The two ports have the capability of independent port clocking (e.g. both ports can run at 6Gbit/sec or the first port can run at 6Gbit/sec while the second port runs at 3Gbit/sec. The supported link rates are 1.5, 3.0, or 6.0 Gbits/sec.

Subject to buffer availability, the Constellation drives support:

•Concurrent port transfers—The drive supports receiving COMMAND, TASK management transfers on both ports at the same time.

•Full duplex—The drive supports sending XFER_RDY, DATA and RESPONSE transfers while receiving frames on both ports.

Constellation SAS Product Manual, Rev. E

47

Image 55

Seagate ST9500432SS, ST9500430SS, ST9500431SS manual Dual port support

Contents

SED Fips 140-2 Model ST9500430SSST9500431SSST9500432SS Standard Model Self-Encrypting Drive Model Revision history Contents Interface requirements Defect and error managementInstallation About Fips About self-encrypting drives Power Constellation SAS Product Manual, Rev. E GB model current profiles List of Figures Constellation SAS Product Manual, Rev. E Seagate Online Support and Services Seagate Technology support services Scope Electromagnetic susceptibility Applicable standards and reference documentationStandards Electromagnetic compatibility Korean KCC Electromagnetic complianceElectromagnetic compliance for the European Union Australian C-Tick European Union Restriction of Hazardous Substances RoHS Reference documents General description Media description Standard features Programmable drive capacity PerformanceReliability Formatted capacities Factory-installed options Access time Performance characteristicsInternal drive characteristics Seek performance characteristics Start/stop time General performance characteristics Cache operation Prefetch/multi-segmented cache control Prefetch operation Caching write data Unrecoverable Errors Reliability specificationsError rates Recoverable Errors Preventive maintenance Reliability and serviceSeek errors Interface errors Reporting control 4 S.M.A.R.TControlling S.M.A.R.T Performance impact Predictive failures Temperature Log Page 0Dh Parameter Code DescriptionThermal monitor Implementation State of the drive prior to testingDrive Self Test DST DST failure definition Log page entries Short and extended testsShort test Function Code 001b Extended test Function Code 010b Shipping Product warrantyProduct repair and return information PowerChoiceTM power management Physical/electrical specificationsPowerChoice modes DC power requirements AC power requirementsPage Power sequencing General DC power requirement notesConducted noise immunity GB model current profiles Current profiles ST9500430SS, ST9500431SS and ST9500432SS in 3 Gbit operation Power dissipation ST9500430SS, ST9500431SS and ST9500432SS in 6 Gbit operation Environmental limits Temperature a. Operating Shock Relative humidityEffective altitude sea level a. Operating Shock and vibrationPage Recommended mounting Vibration a. Operating-normal Air cleanlinessCorrosive environment Acoustics Mounting configuration dimensions Mechanical specifications Purpose About FipsLevel 2 security Data encryption Controlled accessAdmin SP About self-encrypting drives Data bands Default passwordRandom number generator RNG Drive locking Cryptographic erase Authenticated firmware downloadPower requirements Supported commands Drive internal defects/errors Defect and error managementDrive error recovery procedures SAS system errors Media Pre-Scan Background Media ScanDeferred Auto-Reallocation Idle Read After Write Drive orientation Installation Air flow Cooling Grounding Drive mounting Interface requirements SAS features Dual port support Supported commands Scsi commands supported Supported commands Supported commands Supported commands Inquiry data Mode Sense dataConstellation inquiry data Page Mode Data Header Miscellaneous features Miscellaneous operating features and conditionsMiscellaneous status SAS physical interface Datum B Section C C Section a a Pin descriptions Physical characteristicsConnector requirements Electrical description Ready LED Out Signal characteristicsPower SAS transmitters and receivers General interface characteristics SAS-2 Specification ComplianceLED drive signal Differential signals Constellation SAS Product Manual, Rev. E Numerics Index KCC Msid Mtbf See also cooling Page Constellation SAS Product Manual, Rev. E Page Seagate Technology LLC